TEMPERATURE SENSOR ABNORMALITY DETERMINATION DEVICE, TEMPERATURE SENSOR ABNORMALITY DETERMINATION METHOD, AND TEMPERATURE SENSOR ABNORMALITY DETERMINATION PROGRAM

To predict abnormality of a temperature sensor, using a measurement value of the temperature sensor.SOLUTION: A temperature sensor abnormality determination device 1, which measures abnormality of a plurality of temperature sensors A1, A2, B1 and B2 measuring a temperature of almost same location in an atmosphere of a measurement object, comprises: a data accumulator 2 that accumulates measurement values of a plurality of latest samples every prescribed time of respective temperature sensors A1, A2, B1 and B2 for each of the temperature sensors A1, A2, B1 and B2; a detector 3 that detects a difference in size of dispersion of the measurement values accumulated in the data accumulator 2 for each of the temperature sensors A1, A2, B1 and B2; and a sensor warning determinator 4 that determines presence or absence of the temperature sensor warning abnormality from among the plurality of temperature sensors A1, A2, B1 and B2 on the basis of a detection result of the detector 3.SELECTED DRAWING: Figure 1 【課題】温度センサの測定値を用いて温度センサの異常を予測する。【解決手段】温度センサ異常判定装置１は、測定対象の雰囲気中のほぼ同じ場所の温度を測定する複数本の温度センサＡ１，Ａ２，Ｂ１，Ｂ２の異常を判定するもので、温度センサＡ１，Ａ２，Ｂ１，Ｂ２それぞれの所定時間ごとの最新の複数サンプルの測定値を温度センサＡ１，Ａ２，Ｂ１，Ｂ２ごとに蓄積するデータ蓄積器２と、データ蓄積器２に蓄積された温度センサＡ１，Ａ２，Ｂ１，Ｂ２ごとの測定値の分散の大きさの違いを検定する検定器３と、検定器３の検定結果に基づいて複数本の温度センサＡ１，Ａ２，Ｂ１，Ｂ２の中から異常を警告する温度センサの有無を判定するセンサ警告判定器４と、を備える。【選択図】図１